Automatically increasing the PVC size outside the Operator

[aayushsrivastava]

I am considering using one of the following tools for automating the volume expansion in the event of an incident involving unbounded queue growth.

• https://github.com/DevOps-Nirvana/Kubernetes-Volume-Autoscaler
• https://github.com/topolvm/pvc-autoresizer

I believe they work by directly patching the PVC object (only expansions).

Is it a good idea to use something like this with a RabbitMQ cluster created using the RabbitMQ Cluster Operator?

[Zerpet]

It's probably a better idea to put queue length limits in place and/or set message expiration, with or without dead-lettering, to avoid unbound queue growth.

Our team has never tested those utilities, so we can endorse nor discourage its use. I'd suggest you try them out in a dev environment, observe its behaviour, and determine if it works for you.